Im 100% sure, what I said.
Q3 is essentially held at constant current, up to the point, where more than -Ibias have to be supplied to the load, then it rises.

This means a rise of output impedance outside this crossover point and thus lots of distortion.
For this reason the amplifier works nicely at bias currents above 4A ...

I think my guessing is more accurate than your simulation !

Sims may have shortcomings, but they do have a decisive advantage: they have no preconceptions about how a circuit is going to behave.

Anyway, I'm in the process of perfecting the last details in the ultimate simulation: the one that uses solder, bolts, heatsinks, and similar components.

I am not too anxious about the result: I have already physically tested the most critical and contentious part of the circuit elsewhere, and it works as expected.
Here, it is combined with a Taylor follower, but I don't think the end result will differ much from the sim (which, BTW is what I expected).

One advantage of Taylor, CFPs, and current dumping in general, may not be immediately obvious:
Emitter that must be the "follower" can be held at constant current.
And thats quite different than simply throwing a CCS under an emitter.